Patents
Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050)
06/1999
06/03/1999WO1999027667A1 Radio receiver with two tuners and a switch for verifying reception quality at an alternative frequency
06/03/1999WO1999017491A3 Communications system for multichannel transmission with carrier modulation
06/02/1999EP0920208A1 Method and apparatus for gathering program watched data
06/02/1999EP0920207A1 Interactive terminal for television delivery system
06/02/1999EP0920206A1 Advanced set top terminal with electronic mailbox for cable television delivery systems
06/02/1999DE19749120A1 Satellite reception installation with associated data bus
06/02/1999CN1218334A Scalable stereo audio encoding/decoding method and apparatus
06/01/1999US5909664 Method and apparatus for encoding and decoding audio information representing three-dimensional sound fields
06/01/1999US5909439 Satellite communications system
06/01/1999US5909184 Display information receiving device
06/01/1999US5909063 Switchable or automatically terminating connecting device and combination thereof
05/1999
05/27/1999WO1999026368A1 Signaling protocol for satellite direct radio broadcast system
05/27/1999WO1999026367A1 Broadcast network selection techniques for hybrid radiocommunication systems comprising both a cellular communication system and a radio broadcast system
05/27/1999WO1998047249A9 Passenger aircraft entertainment system
05/27/1999CA2309683A1 Signaling protocol for satellite direct radio broadcast system
05/26/1999EP0918423A2 Mobile phone for Internet applications
05/26/1999EP0918407A2 Scalable stereo audio encoding/decoding method and apparatus
05/26/1999EP0917804A1 Television distribution system for signal substitution
05/25/1999US5907827 Channel synchronized audio data compression and decompression for an in-flight entertainment system
05/25/1999US5907793 Telephone-based interactive broadcast or cable radio or television methods and apparatus
05/25/1999US5907582 System for turbo-coded satellite digital audio broadcasting
05/25/1999US5907544 For controlling a common channel wireless access premises area network
05/20/1999WO1999025083A1 A method and arrangement for wireless data transmission
05/20/1999DE19751189A1 Radio receiver with receiver quality check e.g. for vehicle radios
05/20/1999CA2309119A1 A method and arrangement for wireless data transmission
05/19/1999EP0917380A2 Information transmission control apparatus for transmitting same information to a plurality of destinations, and information reception apparatus for receiving information from information transmission control apparatus
05/19/1999EP0917370A2 Signal processing device and method for switching signal processors therefor
05/19/1999EP0917367A1 Data distribution system, distribution equipment, terminal equipment, and data distribution method
05/19/1999EP0917122A2 Transmitting/receiving system for rescue vehicles
05/19/1999EP0916223A1 Return path ingress noise measurement system
05/19/1999EP0916200A2 Testing facility for a broadband communications system
05/19/1999CN1217108A Process for designing transport data stream
05/18/1999US5905865 For connecting a computer with one or more on-line services
05/18/1999US5905741 Data error correcting method for digital signal frames and apparatus used in the method
05/18/1999US5905523 Interactive system
05/18/1999CA2090159C Method and apparatus for coding audio signals based on perceptual model
05/14/1999WO1999023660A1 Recording and reproducing apparatus provided with teletext recording capability
05/12/1999EP0915617A2 Relaying information and information repeater system
05/12/1999EP0914729A1 Audiophonic communication system using a multiplex audiodigital bus
05/12/1999EP0740866B1 A telecommunication system
05/11/1999US5903824 RDS-TMC broadcast receiver which substitutes phonetic characters for non-convertible characters prior to synthesizing speech
05/11/1999US5903617 Method and system for providing synchronization in a stream of messages and a transmitter and a receiver for use in such a system
05/11/1999US5903598 Method and system for simultaneously broadcasting and receiving digital and analog signals
05/11/1999CA2117254C Simulcast synchronization and equalization system and method therefor
05/11/1999CA2106919C Communication system
05/06/1999EP0914002A2 Apparatus for receiving digital broadcast signal and apparatus for recording and reproducing digital broadcast information included in the digital broadcast signal
05/06/1999EP0913974A1 Method to create a send planning for multimedia data
05/05/1999CN1216178A Data compression/expansion on plurality of digital information signals
05/04/1999US5901360 Automatic adjustment delay technique for simulcast of paging system
05/04/1999US5901339 Pay broadcasting system
05/04/1999US5900608 Method of purchasing personal recording media, system for purchasing personal recording media, and media recorded with personal recording media purchasing program
04/1999
04/29/1999WO1999021186A1 Global access system of multi-media related information
04/28/1999EP0912059A2 Terminal with multiple audio and video
04/28/1999EP0912058A2 Method and apparatus for providing broadcast data services
04/28/1999EP0912003A2 Receiver for Digital Audio Broadcast with a means for selecting broadcast messages in an audio broadcast
04/28/1999EP0912002A2 Method for storing broadcast transmission frequency data in a memory of a broadcast receiver
04/28/1999EP0911981A2 Method and device for coding/decoding an audio signal
04/28/1999CN1215272A Pata distribution system, equipment, terminal equipment and distribution method
04/27/1999US5898732 Data service channel provision for an AM compatible broadcast system
04/27/1999US5898693 Spectrum manager for communication network
04/27/1999US5898398 Remote control device and remote control method
04/22/1999WO1999020017A1 Method and system for assessing, at reception level, the quality of a digital signal, such as a digital audio/video signal
04/22/1999WO1999020007A1 A system and method for mitigating intermittent interruptions in an audio radio broadcast system
04/21/1999EP0910218A2 Audio program reception terminal for television delivery system
04/21/1999EP0910208A2 Digital broadcast receiving system
04/21/1999CN1214837A Two-way interactive television system
04/21/1999CN1214825A Game machine system, broadcasting system, data distribution system and its method, and program executing device and its method
04/20/1999US5896560 Transmit control system using in-band tone signalling
04/20/1999US5896555 Multiplex broadcasting of audio-video programs with DTMF signals
04/20/1999US5896554 Status monitoring apparatus for car radio
04/20/1999US5896414 Method and apparatus for providing control channel communications for an information distribution system
04/20/1999US5896215 Multi-channel system with multiple information sources
04/20/1999CA2117451C Method for sending and receiving video images
04/15/1999WO1999018761A2 Device for wireless transmission of digital data especially audio data
04/15/1999WO1999018720A1 Encoded stream splicing device and method, and an encoded stream generating device and method
04/15/1999WO1999018684A1 Interactive digital data broadcasting system
04/15/1999WO1999018518A2 Internet based musical indexing system for radio
04/15/1999WO1999008391A3 Method, mobile station and telecommunication system for generating an adaptation to a process for accessing a radio interface supported by a mobile radiotelephone network
04/15/1999WO1998056106A3 Method and apparatus for improving classroom amplification systems and other rf-type amplification systems
04/15/1999WO1998035495A8 Multichannel television sound stereo and surround sound encoder
04/15/1999DE19744420A1 Method of transmitting information in a common wave network, esp. for networks with narrowly regionally limited interests
04/14/1999EP0909095A1 Reprogrammable terminal for suggesting programs offered on a television program delivery system
04/14/1999EP0909070A2 Virtual web server for concurrently displaying data coming from a plurality of servers in a single browser window
04/14/1999CN1214164A Method and system for communication of control information from control information generator to one or more computer installations
04/14/1999CN1213911A Selection of traffic capable station by RDS radio while listening to other media
04/14/1999CN1213902A RDS ratio with multi-function RDS button
04/13/1999US5894119 Device for enabling listeners to preview music recordings
04/08/1999WO1999017503A1 Method and apparatus for facilitating establishment of communications in a messaging system
04/08/1999WO1999017491A2 Communications system for multichannel transmission with carrier modulation
04/08/1999WO1998045835A3 System for selective distribution of music
04/08/1999DE19743327A1 Method of transmitting information to mobile part of cellular mobile radio system
04/07/1999EP0907265A2 RDS broadcast receiver with a memory for alternative frequencies and method for memory management
04/07/1999EP0906672A1 Low power microcellular wireless drop interactive network
04/07/1999CN1213472A Process and system for OFDM multi-carrier transmission of digital radio signals
04/07/1999CN1213252A Information providing receiving apparatus and method, information providing system, and transmission medium
04/07/1999CN1213234A Wireless information communication method and its device
04/01/1999WO1999016246A2 Pay-per-view program access control system
04/01/1999WO1998058494A3 System for the bidirectional communication of voice and data through a distribution network
04/01/1999WO1998018230A9 Audio decoder with an adaptive frequency domain downmixer
04/01/1999DE19743167A1 Kommunikationssystem Communication system